Sulfite allergy/intolerance

I’ve stumbled across some posts on here and think I may have a sulfite allergy or intolerance. I’ve dealt with weird/unexplained rashes and reactions for the last 15 years. I’ve seen numerous doctors, dermatologists and nobody has given me answers. I did have a patch test a few years ago and was positive for an allergy to sodium metabisulfite (along with rubber and nickel). The doctor never said anything really about it, but I get blisters in my mouth and burning tongue sensation when I eat certain fruits, can’t have any juices, fruit/cocktail mixes, vinegar and many other acidic things. The last few years I’ve had awful issues with my scalp and face. It started when we installed a salt based water softener. I’ve been reading that sodium metabisulfite is in some water treatments, so I’m now wondering if that’s what’s causing my issue. (I have also tried every sulfate free hypoallergenic shampoos on the market and react to everything!). We have turned off the softener, but I’m still experiencing chronic scalp itching/burning and have lost a lot of hair. I’ve been rinsing with bottled water, which is helping slightly but not enough. We have very hard municipal water. Is there any water treatment that doesn’t contain sulfites? I’m so tired of living like this and no doctor seems willing to help me.

Thanks for your suggestions! I plan to read Rick's book for sure. The more I've been reading on sulfite allergies, the more I think I may have this. I'm trying to decrease my sulfite intake to see if it helps, but it's really difficult as there are SO many things I can't have now.

I think I may be one of the unlucky ones who have both a sulfite and sulphate allergy. I think there is something in my municipal water supply that does not agree with my skin, but unfortunately I cannot seem to find a solution to a way of softening/conditioning our water without adding extra chemicals that I may react to.